Because of its rich oil and gas resources and the special tectonic location of the Liaohe Western Sag （the Tanlu Fault traverses the sag）, Bohai Bay Basin, a detailed study of its strike-slip tectonics is significan...Because of its rich oil and gas resources and the special tectonic location of the Liaohe Western Sag （the Tanlu Fault traverses the sag）, Bohai Bay Basin, a detailed study of its strike-slip tectonics is significant in revealing the sag＇s tectonic evolution, its control on hydrocarbon accumulation, and the activity history of the northern section of the Tanlu Fault in the Cenozoic. Through systematic structure analysis of 3D seismic data of the Liaohe Western Sag, combined with balanced section analysis, a variety of structural features in relation to right-lateral strike-slip faults, such as echelon normal faults, ＂comb＂ structure, ＂flower＂ structure,＂interpretable＂ and ＂buried＂ strike-slip faults have been revealed exist in the Liaohe Western Sag. According to the research in this paper, the complex structural phenomena in the Liaohe Western Sag could be reasonably interpreted as right-lateral strike-slip activity and the strike-slip activities of the Liaohe Western Sag began in the early Oligocene. The activity was weak at the beginning （E3s1-2）, then strengthened gradually and reached its strongest level in the late Oligocene （E3d1）. In the Miocene, the strike-slip activity was low and then strengthened significantly once again from the Pliocene to the present. It is speculated that the entire northern section of the Tanlu Fault has had a similar evolution history since the Oligocene.展开更多
The present paper makes a chronological restudy of the controversial Han period cultural remains, and dates the Tianzhuangtuo remains to the early Eastern Han, the College of Physical Culture remains to the late Weste...The present paper makes a chronological restudy of the controversial Han period cultural remains, and dates the Tianzhuangtuo remains to the early Eastern Han, the College of Physical Culture remains to the late Western Han, and the Wanjia Matou, Second Wuben Village, Xinanfeng,Liguanzhuang, Beixinzhuang and Beiwangman remains to the Eastern Han. On this basis the author comes to the following conclusions : Up to the present, more than 100 spots of Western Han, Eastern Han and Han Wei remains have been discovered on the western shore of the Bohai Bay; the previously-called chronological gap of ancient remains does not exist on the western shore of the Bohai Bay; the so-called“transgressions of the late Western Han period on the western shore of the Bohai Bay” must have been sea level changes which happened only in a few areas, in short periods and on a small scale of going up and down, and so should not taken as transgressions; and no transgressions happened in the late Western Ran.展开更多
基金National Natural Science Foundation (40772086)Common advanced projects of CNPC oil and gas exploration (07-01C-01-04)
文摘Because of its rich oil and gas resources and the special tectonic location of the Liaohe Western Sag （the Tanlu Fault traverses the sag）, Bohai Bay Basin, a detailed study of its strike-slip tectonics is significant in revealing the sag＇s tectonic evolution, its control on hydrocarbon accumulation, and the activity history of the northern section of the Tanlu Fault in the Cenozoic. Through systematic structure analysis of 3D seismic data of the Liaohe Western Sag, combined with balanced section analysis, a variety of structural features in relation to right-lateral strike-slip faults, such as echelon normal faults, ＂comb＂ structure, ＂flower＂ structure,＂interpretable＂ and ＂buried＂ strike-slip faults have been revealed exist in the Liaohe Western Sag. According to the research in this paper, the complex structural phenomena in the Liaohe Western Sag could be reasonably interpreted as right-lateral strike-slip activity and the strike-slip activities of the Liaohe Western Sag began in the early Oligocene. The activity was weak at the beginning （E3s1-2）, then strengthened gradually and reached its strongest level in the late Oligocene （E3d1）. In the Miocene, the strike-slip activity was low and then strengthened significantly once again from the Pliocene to the present. It is speculated that the entire northern section of the Tanlu Fault has had a similar evolution history since the Oligocene.
文摘The present paper makes a chronological restudy of the controversial Han period cultural remains, and dates the Tianzhuangtuo remains to the early Eastern Han, the College of Physical Culture remains to the late Western Han, and the Wanjia Matou, Second Wuben Village, Xinanfeng,Liguanzhuang, Beixinzhuang and Beiwangman remains to the Eastern Han. On this basis the author comes to the following conclusions : Up to the present, more than 100 spots of Western Han, Eastern Han and Han Wei remains have been discovered on the western shore of the Bohai Bay; the previously-called chronological gap of ancient remains does not exist on the western shore of the Bohai Bay; the so-called“transgressions of the late Western Han period on the western shore of the Bohai Bay” must have been sea level changes which happened only in a few areas, in short periods and on a small scale of going up and down, and so should not taken as transgressions; and no transgressions happened in the late Western Ran.
